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TUCoPS :: General Information :: satcon.txt

Controlling the orbital dynamics of satellites!




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[ Hacker Supreme's - Hacker Directory V#22 ]
[  Compiled & by: Ninja Squirrel & Logan-5 ]
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This article will deal with Satellite hacking, CB info, and car phone systems.
 
 
Satellite Control
 
     Companies try to build satellites to last for as long a time as possible.
Unfortunately, for the companies, things in space can happen unexpectantly and
suddently.  Take that satellite released by the space shuttle.  It's orbit
carried it way off the correct altitude.  The company's only hope was to fire a
rocket on it in order to bring it to the correct place.
     Now think...how does one on the ground fire a rocket in space?  Radio!
Gee, if the company could change the orbit, maybe we can too.  Sound
interesting?
     Of course we were not the first to think of this.  The satellite companies
have worried about this for a long time.  There are stories about top secret
codes, frequencies, and protocols required to 'nudge' one of those babies.
     The only problem is that-there is little information about this out there.
If you have any info, make a text file, and let others know of your knowledge.
But let me tell you all I know about a simple satellite whose telemetry is
known well.
     OSCAR 6 was a satellite sent up in order to take in amateur signals
between 145.9 and 146.0 MHz, and re-transmit them between 29.45 and 29.55 MHz
using a transponder.  Early in 1976, OSCAR 6 began to have battery problems.
The telemetry allowed the ground command stations to shut the satellite off at
regular intervals to prolong the useful life of the satellite.
     Now we know the satellite sent out telemetry reports at a certain
frequency (OSCAR 7 was 29.502 and 145.972 MHz).  And it sent them out in the
form of Morse code at about 20 wpm.  Information rate of spin, power use, and
temperature were sent out at 20 wpm.  This seems to suggest that the control
might have also used morse code.  Strangely enough, there was never any
information in the American Radio Relay League magazine about just how they
control the OSCAR satellites. (Hams know what's safe and what's crazy also)
 
     Suggestions: Don't overlook RTTY when trying to Satelhack (Satellite
hacking).  Also, chances are the owners will figure out what you did, so
'downing', the ultimate for a satelhack, is pretty difficult.
 
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[ Infinity's Edge Adventure/AE/Cat/Hack 10 meg BBS ------------ 805-683-2725 ]
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